Electric connecter plug



Aug- 25, 1931 H. H. wERMmE: f 1,820,333

ELECTRIC CONNECTER PLUG Filed Juner 11, 1927 Patented Aug. 25, 1931 UNITED STATESl PATENT I OFFICE HUGO II. WEIIMINE, OP VILLA PARK, ILLINOIS, AssIGNOn To HELDEN MANUFAC- TUBING COMPANY, OP CHICAGO, ILLINOIS, A CORPORATION OP ILLINOIS ELECTRIC CONNECTER PLUG Application mea June 1'1,

This invention relates to electric connecter plugs, and Amore particularly to the female part of a separable connecter plug.

The principal object of the invention is to provide a plug of the type referred to, which will be practically unbreakable. Other objects of the invention are to provide a plug of the type mentioned which consists of relatively few parts of simple and easily constructed form; to provide suoli plug of few parts which can be quickly and easily assembled and which will not readily become disassembled.; and, in general, to provide an improved plug of the class described... f

Other objects and advantages of the in vention will be understood by reference to theY following specification 'and accompanying drawings, in whichI have illustratedY a` plug embodying a selected form of the invention and in which drawings :t

Fig. l is a side elevation. v

Fig. 2 is a section onan enlarged scale on the line 2 2 of Fig. l.

Figs. 3 and 4 are sections on the lines 3 and 1 -4, respectively, on Fig. 2, and

Fig. v5 is a perspective of one ofthe parts constituting the plug.

In the drawings, I have indicated a plug comprising a main body portion 6, an auxiliary body portion 7, terminal members 8 and 9, and contact members 10 v and 1.1 con'- nected respectively to the said terminals S and 9. The mainbody portion 6 is preferably cylindricall in form and is provided with a knurled-or fluted end portion 12 of enlarged diameter for facilitating gripping and manipulation of the plug. The main body portion is provided with a pair of recesses or apertures 14 and 15 extending longitudinally thereof, and in which recesses the terminals 8 and 9 are respectively disposed. The main body portion is also pro` vided with an outwardly projecting annular rib 16 which is adapted to interlock with a similar rib on a male connecter plugl, such as indicated in dotted lines in Figure 2.

The contact member 11, preferably inthe form of a screw-threaded metallic shell,- is

.provided with an inwardly extending flange 1927. Serial No. 198,022.

17 and is seated about ythe inner end of the main body portion with the flange portion 17 engaging the end of the body and thereby serving to position the contact shell' thereon. The inwardly extending flange 1T is provided vrvfith .la section 18 of increased width, and this section is slottedas indicated at 19 to permit the passage of the terminal 9 -therethrough. The inner portion 2O of` the widened section of the flange is inwardly offsetapproximately the thickness of the term'inalmember, and the terminal member is bent 'over to provide a leg' portion 21 which. engages the said inwardly offset portion 20 and is thus positioned in the aperture 15.

The contact shell 11 and terminal 9 are held in position on the plug body 6, prefer ably by'means-of the auxiliary body portion 7. This auxiliary body portion comprises an inwardly extending stem 22 which is seated in a conforming recess 23 in the main body portion, and a flange portion 24.5 which over-lies the end of the main body port-ion and is effective to'clairn' the inwardly extending flange 18 of the contact shell against the said innerend of the main body member.

In the present embodiment of my invention, vI prefer to mount the termina-l member 8 and contact member l() to which it is connected,'on' the auxiliary body portion 7, and accordingly I make, the contact member 10 vin the form of a rivet havinganv enlarged head portion 25 seated in a recess 26 provided in the inner end of the inwardly `lextending stem'22. y It -will be understood that the auxiliary body portion 7,' terminal memshown in Figs. 2, 3 'and the inwardly4 extending stem portion 22 of 'the auxiliary body member is of (lm-'C-tailT-i. e., flaringshape, and, as above noted, the recess 23 in the body portion 6 conforms to the shape of the stein.

The body portions (l and 7 are preferably made of relatively soft and resilient rubber or like material so that these parts are practically unbreakable even when subjected to the hardest use and most careless handling, and the fact that these parts are resilient permits` one or both of them to be distorted sulliciently to permit assembling ot the above-described dove-tail interlocking connection. It will, of course, be understood that either one of the parts may be made ot' such resilient material as will permit sutilcient distortion thereof to permit assembling with the other part, which may be made of hard or firm material.

This form of interlocking connection has the additional advantage, due partly to the expansive tendency ot' the. resilient material, of normallv tending to urge the auxiliary body member to move to vards the main body member so as to eillectively clamp the Contact. shell and its terminal member in operative position on the main body member. rEhe inwardly extending stem portion 22 of the member 7 preferably provided with a pair of notches 2T and which are adapted to be aligned with the apertures l-t and 15 in the body portion (l to permit passage terminals and to facilitate assembling` ot the two body parts. lt will be noted that the Contact shell ll. is prevented lroni rotating about the body member (l because oi" its interlocking engagement with the terlninal 9 and the fact that the terminal i) is disposed, in the relatively close, fitting aperture 15, which, ot course, prevents lateral movement ot the terminal.

The above described details oli ionsi'ruction being illustrative of a selected embodiment of my invention, it will be understood that the scope of 'the same should be determined by reference to the following claims, which should be construed as broadly as 1nossible consistent.. with the. state ol the art.

l claim as my invention:

l. An electric plug connecter. comprising a main body member haring a reces-s there in, an auxiliary body member intcrlocked liberen/itl one olE said members being formed ol' resilient material so as to be capable ot being distorted i'or permitting irs. tei-locking' thereot with the other member. and a terminal disposed in the recess in said main body member and provided with a portion engaging said auxiliary namber, whereby the terminal is retained in said aperture..

i?. An electric plug connecter. conmrising a main body member ha ving a recess therein, an auxiliary body member interiin'liei'l therewith, one o't said members being formed ot resilient material so `as to be capable ol being distorted for permitting interlocking of said members, a terminal disposed in said recess. and a contact member connected to said terminal, said terminal and Contact member being provided with means engaging said auxiliary member and thereby maintained in operative position relative to said main body member.

2l. An electric. plug connecter, comprising a main body member having a recess therein, a contact shell disposed around said body member and having an inwardly projecting llange fitting over the inner end otl said main body member, said shell being thereby held against out-ward movement along said body member. a terminal disposed in the recess in said main body member and having its inner end portion bent over and interlocked with said flange on said shell and thereby locked against outward movement in said recess. and an auxiliary body member body interlocked witn said main body member so as to be normally inseparable lherel'rom and ell'ective to maintain said contact shell and terminal inici-locked.

l. ln an electric plug connecter, the combination ol a relatively sott rubber body member having a pair ot apertures extending longitudinally therethrough. a terminal and a contact shell eliaftrically connected and disposed respwtively in one of said apertures and around said body member, a relatively sott rubber auxiliary body member, another terminal and contact member connected together and secured to said auxi liary member, and dove-tail m xans tor interlocking said auxiliary meniber and main body member with the terulinal carried by the auxiliary member disposed in the other ot said apertures.'

5. ln an electric plug connecter, the combination ot a relatively sott rubber body member having a pair of apertures extending longitudinally therethrough, a terminal and a contact shell electrically connected and disposed resliectively in one oil said apertures and around said body member, said shell having an inwardly extending annular flange at its inner end seated against the inner end ot said body member. a relatively sott rubber auxiliary body member. another terminal and contact member connected together and secured to said auxiliary member, and dove-tail means tor in lerlocking said auxiliary meml'ier and body member willi the terminal carried by the auxiliary member disposed i'n the other of said aliertures, said auxiliary member being provided with means engaging said inwarcb ly extending l'lange to retain said Contact shell on said main body member.

(3. ln a female electric plug connecter, the combination of a pair of body parts. one ol' which is provided with a pair of apertures extending therethrough, said parts Utl lll@

lll!

having dove-tailed interlocking engagement, and one of said parts being formed of resilient material and capable ofbeingydistorted to permit such interlocking engagement to be effected, a terminal and a contact shell electrically connected and disposed respectively in one of said apertures and around the aperturedbody part and provided With means engaging the other body part whereby the terminal and sliell are retained in said position, and another terminal and contact member electrically connected and carried by thel said other` body part, this said terminal being disposed in the other of said pair of apertures and the contact member substantially coaxially of said contact shell.

7. An electric plug connecter comprising a main body member having' an aperture therein, an auxiliary body member, means provided on each of said body members integral therewith for interlocking said body parts, a terminal disposed in said aperture and secured to said auxiliary body member,`

and a contact member carried by said auxiliary body member and serving to secure said terminal thereto.

8. In a female electric plug connecter, the combination of a pair of body members of relatively soft rubber interlocked together to serve as a unitary substantially unbreakable plug body, one of said body members carried by said auxiliary body part and electrically connected to the other of said terminals, said main and auxiliary body parts being relatively-distortable to permit assembly thereof into said interlocking engagement.

H. H. WERMINE.

9. In a female electric plug coii'iic'ctei,"c.he 'I combination ot' a main body member provided. with an aperture extending longitudr nally therethrough, a terminal member disposed in saidy aperture, a contact shell disposed about said body member .'andpro vided with an inwardl extending lannular flange engaging one enl of said body mem ber for positioning the shell on the member and also contacting with a portion of'said terminal for establishing electrical connection therewith, and an auxiliary body member provided with a portion overlying said lflange an'd having interlocking.engagement y v engagement, tli'e `form of the interlocking connection being such that it normally tends p to urge said auxiliary body member to move towards said main body member, whereby said auxiliary member is effective to clamp said shell and terminal in operative posi- .tion on said main body member.

l0. A female connecter plug of the class described, comprising a main body part hav-4 ing a pair of openings therein, a pair of lil() llt DSCLAIMER 1,820,333.Hug0 H. Warming. Villa Park, Ill. ELECTRIC CONNECTOR PLUG.: Patent dated August 1931. Disclaimer filed October 9, 1931, by the assignee,` Belden lllanufllcu'rbbg 01m/pany.

Hereby enters this disclaimer to the subject matter ofz.

Claim l of said Letters Patent, except insofar assaid claim relates to :u1 eleetricI connecter plugv having` a1 terminal ,concealed or enclosed Within a rece-ss in the main body portion for receiving in Contact therewith within said recess, u prong of :1nother connecter;

Claim 2 ofsaid Letters Patent, except insofar said claim relates to :111 electric, connecter plug having a roiitzut member exposed on the exterior of the structure, and in which the terminal nud coutzut member uro separate and dstiiirt elements, each of which is provided with menus engaging the auxiliary body member.

[Oyoz'al Gazette @Ctober 937, 1931.] 

